Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Alphascope/Spinthariscope. This is a radiation monitoring device just like the "geigerscope" described in the previous sample. Spinthariscopes are explained in more detail here. Source: eBay seller geoelectronics Contributor: Theodore Gray Acquired: 19 May, 2007 Text Updated: 19 May, 2007 Price: $20 Size: 1.5" Purity: 0% Sample Group: Spinthariscopes